UI elements are not being stretched

Brainstorm
1

I’m currently modifying viewitem.svgz and I just discovered that TOP,BOTTOM,LEFT,RIGHT parts of the image are not being stretched. Instead programmers decided to use tiling method

This how it looks in inkscape

a
a1592×852 246 KB

Looks fine if elements are small

b
b637×588 122 KB

but problems is when ui elements are bigger

c
c371×260 41.7 KB

d
d479×510 54.7 KB

Devs ,can you add support for some new ID tag in svg like
HOVER-RIGHT-STRETCH

So Plasma could apply stretching instead of default tiling.

2

The same problem with tasks.svgz

fun fact: Center is correctly stretched. LOL!

Untitled-2
Untitled-2922×262 46.3 KB

How am I supposed to create something more complex with that kind of bugs/limitation?
Now I see why ALL KDE plasma themes are so basic in design.